The Stockmine ("stick mine"), also Betonmine ("concrete mine"), was a German anti-personnel stake mine used during the Second World War. It consisted of a cylindrical concrete main body on top of a short wooden stake. The concrete head contained a small TNT bursting charge, and was embedded with a number of metal fragments. A fuze is fitted to a central fuze well on the top of the mine. It could be used with a range of fuzes including the ZZ 35, ZZ 42 and ZU ZZ 35 that would trigger on either a tripwire pull or release.
A number of copies of the mine were produced after the war by different countries including the Cuban PMFC-1, the Czechoslovakian PP-Mi-Sb, and the Yugoslavian PMR-2 which is found in Bosnia and Croatia.
| Stock Mine | PMFC-1 | PMR-2 | PP Mi-Sb | ||
| Height (excluding stake) | 165mm | 150mm | 180mm (approx) | 140mm | |
| Diameter | 70mm | 750NaN0 | 80mm | 750NaN0 | |
| Weight | 2kg (04lb) | 2kg (04lb) | 2.2kg (04.9lb) | 2.1kg (04.6lb) | |
| Explosive content | 100g | 75g of TNT | 75g of TNT | 75g of TNT | |
| Operating pressure | various | NaN0NaN0 | 30NaN0 pull | NaN0NaN0 pull |